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Finding the Third Proportional to 303,711 and 664,621

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Solution

The third proportional to 303,711 and 664,621 is: 1,454,412.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,711 : 664,621 = 664,621 : x
  2. Step 2: Convert to fraction form
    303,711/664,621 = 664,621/x
  3. Step 3: Cross multiply
    303,711x = 664,621 × 664,621
  4. Step 4: Simplify right side
    303,711x = 441,721,073,641
  5. Step 5: Solve for x
    x = 441,721,073,641/303,711
  6. Step 6: Final answer
    x = 1,454,412.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.